[PATCH v2 16/27] drm/tegra: Add Tegra114 display controller support

[Thierry Reding]

On Mon, Oct 14, 2013 at 12:05:18PM -0600, Stephen Warren wrote:
> On 10/12/2013 05:32 AM, Thierry Reding wrote:
> > On Fri, Oct 11, 2013 at 04:14:27PM -0600, Stephen Warren wrote:
> >> On 10/07/2013 02:34 AM, Thierry Reding wrote:
> >>> From: Mikko Perttunen <mperttunen at nvidia.com>
> >>> 
> >>> The Tegra114 display controller is backwards-compatible with
> >>> previous generations of the Tegra SoC. No code changes are
> >>> required.
> >> 
> >> If the HW is backwards-compatible, then there's no need to add
> >> extra compatible values to the driver; just write the following
> >> in the DT, and it'll just work:
> >> 
> >> compatible = "nvidia,tegra114-dc", "nvidia,tegra30-dc";
> > 
> > One reason why I thought it might be useful to still include this,
> > even though unnecessary, was to match it to the host1x_drm_subdevs
> > table. We can probably remove the entry from there as well,
> > though.
> > 
> > As far as I can tell, the same holds for Tegra30, which is also 
> > backwards compatible with Tegra20 but the DTS doesn't contain the 
> > Tegra20 compatible. So to keep ABI compatibility we'll need to keep
> > the nvidia,tegra30-dc in the driver's match tables, but I could
> > still update the DTS to include the nvidia,tegra20-dc for
> > correctness.
> > 
> > Does that make sense?
> 
> Yes, fixing the Tegra30 .dtsi file sounds like a good idea.

Done.

Thierry
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 836 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20131015/0c96189c/attachment.pgp>